I have what I think is a really good Critcal x Northern Lights Autoflower grow going. There has always been some discoloration on the leaves. I don’t see any spider mites. Can anyone explain the discoloration. Photo attached.
I’m no expert but that looks like you have thrips. Do you have a magnifying glass?
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I would say bugs because of the spotting so look at it the leafs under magnification and check for bugs. If no bugs it could be ph or alot of things.
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@Brian.C i agree with @Philly111 that definitely looks like thrips. There are resources here already on how to treat thrips. #plant-care #plant-care:pests
I personally have used the garlic oil and pepper oil foliar spray with success. I have also had succes with diatomaceous earth and the neem works too. I’ve never personally used spinosad or pyrethrin though so I can not speak to its effectiveness. Hope this helps.
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Nice knowledge drop 
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